16) The mass number of an element whose atoms have 12 protons and 13 neutrons is_

a) 12

b) 13c) 25 d) 12.5

Mineral replacement, carbon film and molds are a few examples of a. fossil formation c. fossil preservation b. fossil index d. ancient enviorments

Compare the mass of the Mg ribbon with the mass of the magnesium oxide. Notice that the the mass of the magnesium oxide is greater than the mass of the Mg. How do you account for this apparent increase in mass?

Curious Carl and his lab partner were conducting a variety of experiments to produce gases: hydrogen, oxygen, and carbon dioxide. In one experiment, they added a piece of magnesium ribbon to 10 milliliters of hydrochloric acid.

Which metal will displace Nickel in a compound

What is the purpose of adding nahso3 at the end of the oxidation? write a balanced equation for the reaction it undergoes?

What is the enthalpy of combustion (per mole) of C3 H8 (g) ?

Describe how speed, velocity and acceleration are related?

What is 3 ethyl 3, 4 dimethylheptane abbreviated structural formula?

What kind of energy can be transferred

What could a scientist do to determine what era the Eocene period belongs to on the geologic timescale?